CN203941640U - A kind of gradual sound insulation teaching aid - Google Patents
A kind of gradual sound insulation teaching aid Download PDFInfo
- Publication number
- CN203941640U CN203941640U CN201420375540.3U CN201420375540U CN203941640U CN 203941640 U CN203941640 U CN 203941640U CN 201420375540 U CN201420375540 U CN 201420375540U CN 203941640 U CN203941640 U CN 203941640U
- Authority
- CN
- China
- Prior art keywords
- chassis
- blimp
- electrodynamic pump
- air bag
- sound insulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a kind of gradual sound insulation teaching aid to it is characterized in that comprising: chassis, sealing strip, blimp, tracheae, electrodynamic pump and air bag, described blimp is buckled on chassis, between blimp and chassis, accompany sealing strip, described blimp has hole and is communicated with electrodynamic pump by tracheae, connects an air bag after electrodynamic pump; Described chassis adopts double-layer vacuum structure; Described chassis adopts concave station structure, and surrounding has flange; Coloured gas is housed in described air bag.The utility model is simple in structure easy to use, adopt electrodynamic pump to replace traditional manual pump greatly to save time and manpower, and owing to there is coloured gas, gas color is thin out gradually in vacuum, ring of alarm clock diminishes gradually simultaneously, and teaching efficiency is more obvious.
Description
Technical field
The utility model relates to teaching equipment field, is specifically related to a kind of gradual sound insulation teaching aid.
Background technology
Junior physics laboratory, has a class to say vacuum sound insulation, and the equipment using while testing is a plastic chassis, put an alarm clock above, alarm clock outer mask a cloche, and that while testing, will require great effort with manual pump is evacuated air in cloche, so just can't hear the sound of alarm clock.Though can realize teaching purpose like this, experimentation is wasted time and energy.
Summary of the invention
The utility model is wasted time and energy when testing for solving conventional teaching equipment, and effect is not so good shortcoming also, has proposed a kind of gradual sound insulation teaching aid.
The technical solution adopted in the utility model is: a kind of gradual sound insulation teaching aid is characterized in that comprising: chassis, sealing strip, blimp, tracheae, electrodynamic pump and air bag, described blimp is buckled on chassis, between blimp and chassis, accompany sealing strip, described blimp has hole and is communicated with electrodynamic pump by tracheae, connects an air bag after electrodynamic pump.
Described chassis adopts double-layer vacuum structure.
Described chassis adopts concave station structure, and surrounding has flange.
Coloured gas is housed in described air bag.
The beneficial effects of the utility model are: the utility model is simple in structure easy to use, adopt electrodynamic pump to replace traditional manual pump greatly to save time and manpower, and owing to there being coloured gas, in vacuum, gas color is thin out gradually, ring of alarm clock diminishes gradually simultaneously, and teaching efficiency is more obvious.
Accompanying drawing explanation
Fig. 1 structural drawing of the present utility model.
Reference numeral: 1-chassis, 2-sealing strip, 3-blimp, 4-tracheae, 5-electrodynamic pump, 6-air bag.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.A kind of gradual sound insulation teaching aid is characterized in that comprising as shown in Figure 1: chassis 1, sealing strip 2, blimp 3, tracheae 4, electrodynamic pump 5 and air bag 6, described blimp 3 is buckled on chassis 1, between blimp 3 and chassis 1, accompany sealing strip 2, described blimp 3 has hole and is communicated with electrodynamic pump 5 by tracheae 4, air bag 6 of the rear connection of electrodynamic pump 5; Described chassis adopts double-layer vacuum structure; Described chassis adopts concave station structure, and surrounding has flange; Coloured gas is housed in described air bag.
During experiment, directly alarm clock is placed on chassis 1, blimp 3 is covered in the middle of the concave station on alarm clock outside and chassis 1, then first the coloured gas in air bag 6 is clamp-oned in blimp 3, make color on the interior gas band of blimp 3, then with electrodynamic pump 5, the interior gas of blimp 3 is drained only gradually, in the process of taking out, thin out explanation gas is in minimizing gradually for gas color, and alarm clock sound is also reducing gradually simultaneously, explanation, along with the minimizing sound of gas cannot be propagated gradually, reaches teaching purpose.
Below be only specific embodiments more of the present utility model; above-mentioned concrete structure can not be interpreted as it is to restriction of the present utility model; in fact; specific embodiment of the utility model has a variety of, within every insubstantial modifications of in the utility model design, it being made all falls into protection domain of the present utility model.
Claims (4)
1. a gradual sound insulation teaching aid, it is characterized in that comprising: chassis, sealing strip, blimp, tracheae, electrodynamic pump and air bag, described blimp is buckled on chassis, between blimp and chassis, accompany sealing strip, described blimp has hole and is communicated with electrodynamic pump by tracheae, connects an air bag after electrodynamic pump.
2. a kind of gradual sound insulation teaching aid claimed in claim 1, is characterized in that described chassis adopts double-layer vacuum structure.
3. a kind of gradual sound insulation teaching aid claimed in claim 1, is characterized in that described chassis adopts concave station structure, and surrounding has flange.
4. a kind of gradual sound insulation teaching aid claimed in claim 1, is characterized in that being equipped with in described air bag coloured gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420375540.3U CN203941640U (en) | 2014-07-09 | 2014-07-09 | A kind of gradual sound insulation teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420375540.3U CN203941640U (en) | 2014-07-09 | 2014-07-09 | A kind of gradual sound insulation teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203941640U true CN203941640U (en) | 2014-11-12 |
Family
ID=51860939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420375540.3U Expired - Fee Related CN203941640U (en) | 2014-07-09 | 2014-07-09 | A kind of gradual sound insulation teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203941640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104050853A (en) * | 2014-07-09 | 2014-09-17 | 翟玉佳 | Gradual mode sound insulating teaching aid and experiment method thereof |
-
2014
- 2014-07-09 CN CN201420375540.3U patent/CN203941640U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104050853A (en) * | 2014-07-09 | 2014-09-17 | 翟玉佳 | Gradual mode sound insulating teaching aid and experiment method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20150709 |
|
| EXPY | Termination of patent right or utility model |